Memory density and bus timing for embedded data buffering
The CY62148DV30L-55SXIT is a 4 Mbit asynchronous SRAM from Infineon's MoBL series, organized as 512K x 8 bits with a 55 ns access time. This density suits applications like code shadowing in an FPGA, data logging buffer in an industrial controller, or working memory for an MCU that needs deterministic read latency without the refresh overhead of DRAM. The 55 ns access time defines the maximum read-cycle rate the host bus can sustain — a 16-bit MCU running at 18 MHz has a 55 ns bus cycle, so this part matches the bus timing without wait states.
Supply range and temperature grade for system-level fit
It is reworkable with a hot-air station and compatible with socketed prototyping boards. Surface-mount assembly on a two-layer PCB is straightforward — the 1.27 mm pin pitch fans out without micro-vias.